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Check Out Rare Images of Borneo’s “Ghosts of the Forest”

The Sunda clouded leopard proves elusive even when there are camera traps aimed at finding them

An Explosion of Feces May Have Triggered Earth’s Explosion of Species

The nutrients found in animal excrement should never be discounted

The Virtue of Being Simple

A surprising number of creatures don’t benefit from greater intelligence

Why We Think We Know More Than We Do

Breaking down the famous “Dunning-Kruger effect” with David Dunning himself


Read Stories from Our Newest Print Issue: The Stupid Issue

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When Stupid Was a Diagnosis

A dark history that is in danger of returning as support for people with disabilities withers

Why Are We Using Machines to Study Our Inner Lives?

Increasingly scientists are testing chatbots rather than humans in experiments

What Makes Humans Stupid

It takes intelligence to get things spectacularly wrong. An essay on our undoing.

How Hannibal’s War Elephants Helped to Determine His Route Through the Alps

When you go into battle with nearly 40 gigantic pachyderms, you need to take the shortest path possible

The Rabies Vaccine Debuted Nearly 150 Years Ago Today

Pioneering microbiologist Louis Pasteur helped save the life of a dog-bitten boy

This Was a Big Week for Marie Curie, More Than 120 Years Ago

Despite steep odds, she became the first woman in France to earn a doctorate in science

More Testosterone Won’t Make a Better Soldier or a Tougher Man—Aggression and Strength Drive T Levels, Not the Other Way Around

Defense Secretary Pete Hegseth is requiring service members to screen for low testosterone levels. Ironically, the military lifestyle itself is more likely to lower T levels.

Even Owning a Cell Phone Is Bad for Kids’ Test Scores

New research hints that school cell phone bans may not be enough

Why Do Psychiatric Disorders Persist in Humans?

Genetics suggest they may be linked to certain forms of intelligence

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A “Hellish Cloud” Descended on Los Angeles in 1943

It marked the city's first smog incident. Here’s what it looked like—back then and over the years that followed.

Which Fish Species Will Invade the Mediterranean Next?

The features of fish that have passed through the Suez Canal provide clues

Koalas Are Getting a Vaccine to Help With Their STD Problem

It’s a key step in saving them from extinction

What a Picture of a Dog Has to Do with Reason and Logic

People who can’t see images in their minds challenge an old philosophical standby

Science Is Political—and Spiritual

Author and physicist Chanda Prescod-Weinstein on the crisis in American science

How Dreaming Drains Your Energy

The brain makes its bed long before we dream, and the neurons don’t call all the shots

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This Ichthyosaur Chomped a Pterosaur—Then Got Chomped by Something Bigger

Sometimes you’re the predator, sometimes you’re the prey

You’re Carrying “Ghost DNA” From Extinct Hominins

A new technique reveals human evolution was rife with interbreeding

Microfossils Help Crack Mystery More Than 100 Million Years in the Making

Almost all of these tiny organisms vanished way back in the early Cretaceous period

The Odyssey of the Stone Age Maltese

New research points to a seafaring people who ranged far and wide

Did Ancient Humans Prefer Hunting Female Mammoths?

Female or not, mammoths were definitely key to their survival

Earth Is Lumpy as Hell

It’s what’s on the inside that counts